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crossfirex 5830 & 5850?

post #1 of 20
Thread Starter 
Hello guys, I need your help on this. I currently have an sapphire 5830 that I bought 2 months ago for around 100 euros (new). Today I want to buy another 5830 and put them on crossfire and get a good boost (I've seen on a several reviews 2x5830 do the job as a 6950/6970).

The problem is, here in Spain, it's ***IMPOSSIBLE*** to find that card anymore for that price, or under 150-170 euros.
A guy I know has one 5850 he is willing to sell me for 110 euros, so I'm willing to buy it, but I have another problem: I have an Fortron Epsilon 600W psu with a overclocked i7-2600k at 4.4GHz, so I'm not sure if that PSU will deliver enought power to the graphics?

TL;DR:

1. Is a good idea to crossfire 5830 with 5850?
2. It's a 600W psu enough for that crossfire and i7-2600k @ 4.4GHz?


Thanks guys, I rely totally on your opinion on this!
Edited by Phr33d0m - 8/9/11 at 7:41am
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
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CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
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post #2 of 20
You can crossfire it, it should perform well.

PSU: No idea, get a picture of the specs on the side & the exact model.
post #3 of 20
Thread Starter 
Quote:
Originally Posted by The Master Chief View Post
You can crossfire it, it should perform well.

PSU: No idea, get a picture of the specs on the side.
But the 5850 will perform at 5830 speeds right?
That's not a problem for me, just wonder if it's correct?
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
  hide details  
Reply
post #4 of 20
Never heard of the PSU so I cannot comment on that:
The 5850 will be fine crossfired with the 5830 as AMD allows any card in the same class to be crossfired (i.e. 58XX with any 58XX)

The 5850 will perform at 5830 specs.
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
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The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
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post #5 of 20
Quote:
Originally Posted by Phr33d0m View Post
But the 5850 will perform at 5830 speeds right?
That's not a problem for me, just wonder if it's correct?

No, they will each run at their rated speeds.
post #6 of 20
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post
The 5850 will perform at 5830 specs.
Quote:
Originally Posted by The Master Chief View Post
No, they will each run at their rated speeds.
What?
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
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Reply
post #7 of 20
Quote:
Originally Posted by Phr33d0m View Post
What?


Ever since the 3800 series, each card will run at there own clock speeds.


Thus, the 5850 will run like a 5850, and the 5830... well a 5830.
post #8 of 20
Thread Starter 
Quote:
Originally Posted by The Master Chief View Post
Ever since the 3800 series, each card will run at there own clock speeds.


Thus, the 5850 will run like a 5850, and the 5830... well a 5830.
So I should connect my monitor to the 5850? Or that's not important?

Also I've tried to calculate the PSU I'd need with different tools and here are the results:
1. First says I'd need 440~510W
2. Second says (the newegg one) I'd need: 740W
Can someone help me with the watts as I'm not sure that I'd be able to buy a new PSU too.
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-2600k OC @ 4.8GHz (1.395V) ASUS P8P67 rev. B3 ATI Radeon HD 5830 1024MB 2x4GB (8GB) Kingston 1333MHz DDR3 
Hard DriveOSPower
Seagate 500GB 32MB + WD 1TB 64MB Winblows 7 64bit + Gentoo amd64 Fortron Epsilon 600W 
  hide details  
Reply
post #9 of 20
Quote:
Originally Posted by Phr33d0m View Post
So I should connect my monitor to the 5850? Or that's not important?

Also I've tried to calculate the PSU I'd need with different tools and here are the results:
1. First says I'd need 440~510W
2. Second says (the newegg one) I'd need: 740W
Can someone help me with the watts as I'm not sure that I'd be able to buy a new PSU too.


whatever card is in the first PCI-E slot, I usually do.
post #10 of 20
Newegg's calculator is terrible, ignore it.
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